Anthony o malley



Sept. 21,1926. 1,600,296

A. OMALLEY v MULTIPLE STE THOSCOPIC SOUND DETECTOR Filed August 7, 1924 23 INVENTOR ATTORNEYS Patented Sept. 21, 1926.

UNITED STATES mrnoiw onALLEY, or rrusnme, NEW roan.

uoL'r rLE- s'rn-rnoscorrc soimn nn'rnc'ron.

Application. filed August 7, 1924- Serial No. 730,620.

My invention relates to improvements in sound detectors of the stethoscopic ty e, and the objects of this invention are as 01- lows:

First: To roduce. a supersensitive stethoscopic sound detector which by the nature of its design permits the reception and transmission of a number of sounds at one and the same time.

Second: To arrange a stethoscopic sound detector in such manner as to permit a number of persons to listen at one and the same time.

Third: To provide means, within the stethoscopic sound detector, to transmit and ma 'fy the sounds.

ourth: To provide intermediate electrical sound amplification and regulating means so that any desired degree of amplification may be obtained.

Fifth: To provide .means'in a sound re-- ceiver to exclude all other sounds except those admitted, from entering the ears 'of the listeners.

Sixth: To provide exact adjusting means in a sound receiver, to regulate and control the sound transmission and also individually adjust the sound conducting tubes entering the ears of the listener's.

Seventh: To so design a supersensitive stethoscopic sound detector as to permit not only the detection of sounds upon the human body, but also to detect and amplify seemingly hallucinatory or natural sounds as heard by one person and not by another.

The invention consists of the novel com bination, construction and arrangementsof various elements and parts, as fully described in this specification and shown in 40 the accompanying drawing in which:

Figure 1irepresents a d1agr'ammatical arran ement of a stethoscopic sound detector.

Figure 2 is an enlarged sectional side elevation of the sound receiver.

Figure 3 represents a sectional view of a portable sound amplifying and regulating:

cabinet.

Figure 4 is a perspective view of a complate stethoscopic sound detecting equipment or tiepurpose of detectmg hallucinatory In the diagram (Figure 1) allthe principal elements comprising sucha stethoscopic sound detector are clearly shown and described hereafter. The principal elements consist of 1. The stethoscopic sound detectors A and B.

2. The electrical sound amplifying control and regulating equipment G.

3. The sound receivers D3:

1. The stethoscopic so zmd detector.

The preferred design of a sound detector for use upon human bodies is indicated by letter, A. r i i This receiver consists of a shell .I, a suitable diaphragm 2, mounted upon the bell shaped receiver end of shell 1.

A sensitive and delicately adjusted vibra- 'tion multiplying lever, consisting of the short lever-arm 4, engaging diaphragm 2, and the long. lever arm 5, carrying a thin metal disk 6, made of magnetic material and playing in the magnetic field of a suit- 7 'able,electromagnet 7. I

The multiplying lever 4 and 5 is pivoted at 3 upon a suitablysupported bracket 8.

Letter B indicates the preferreddesign sounds of hallucinatory nature. For'this purpose, a much larger and more sensitive diaphragm 9, is mounted upon an accordingly enlarged shell 10, preferably m'ounted upon a pedestal 11. The vibrating multi plying arran ement and its functioning is principally a ike to the one described for l the sound detector A. I

2. The electrical sound amplifying control I and regulating equipment. .This equipment indicated by letter C \is' of the multiple type, and designed for the detection of difierent sounds at the same time, as frequently required in diagnosing diseases in the human body. inductive transformer E consisting of a primary coil 12, a secondary coil 14, connected to the primary coil 15 of another inductive transformer -F whose secondary. coil 16, is electrically connected to bus bars 17 and 18. These bus bars 17 and 18 are electrically connected to a series of connection plugs 19 and 20. Suitable capacity condensers 21, are interposed for regulating pur.- poses. o

One legof primary coil 12, is connected with connection plug 24, the other leg is connected in series with. a number of electric dry cells or storage batteries 22," the individual cells of which are connected to the contact buttons of aselector switch 23,

ofa sound detector for the detection of the pivot hub of which connects to connec primary coil 15, of the second amplifying tion plug 25 and 26. A switch 27 is intertransformer FE/whose secondary, coil 16 posed and electrically connected to primary is connected to bus bars 17 and 18, to whlch coil 12 and connecting plug 28. I the mdlvldual connectlon plugs 19 and 20,

- are connected. The still further increased 70 I inductive currents are then transmitted to" The sound receivers indicated by letter the sound receivers D whose magnet 34 D consist of a bell shaped body 29, see will be energized by these currents and thus also Fig. 2, a suitably shaped cover piece correspondingly induces the magnet1cd1a- I to 30, preferably fastened to body 29, by means hragm 31 lgure 2) to vibrate and there- 75 of .a screw thread 31. Body 29 and cover y reproduclng the amplified sounds of 30 are so designed as to tightly clamp and detectors A. Suitable variable condensers hold a magnetic diaphragm 32, and a sup- 21, are interposed between the transformer ikoiting disk 33, upon which a suitable eleccoils for capacity regulating purposes.

.3. The sound receivers.

t 'cal magnet 34, is fastened. The core 35, It is frequently desirable to be able .to 80 of his magnet is'provided with a veryvfine utilue the existing phone or other outside thread 36, so it may be adjusted into the, clrcuits, to energize the detector and transproper position relative to the diaphragm former primary circuit. For this purpose 32. A stem and knob 37, attached to core selector switch 23, is,pos'i tioned upon the 20 35, is provided to facilitate the adjusting dead contact 42, as indicated in dotted lines, 85 of core 35. A suitable opening 38, in body thus disconnecting the battery 22 entirely, 29is arranged to permit the entrance of .the and switch 27, is placed upon contact 43, electrical conductor 39. also'indicated in dotted lines, then connec- A suitable cushion ring 40, permanently .tion is made from connection plugs and 25 mounted upon the. outer rimiof cover 30, 28, to asuitablerheosta't 43 and from there is provided to exclude any interfering to a connection plug 44, and receptacle 45, sounds, when brought into engagementwith connecting with the outside circult.

the ear of the listener. Ane'ar tube 41, in- To detect hallucinatory or natural sounds, tended to enter the ear channel ofthe lisas sometimes conceived by one person yet 30 tener is so arranged as to permitindividual inaudible to others, a much more sensitive 95 adjustment or replacement, bymeans of an sound detector must be rovided. 'For this adjustment thread 42. pull'fiosde a diaphragm vglry lea-g8 aliea is utie assown,an in'cate etter- Fmwtwnmg of the detector fB. All other points and flmctions are the In case it is desired to utilize the equipsame as described previously, the, only difment for stethoscopic purposes, to detect ference being that only one set of amplifydifferent sounds at one and the same time ing equipment is used and the sound rewithin the human body, two stethoscopic ceivers are connected as shown in full lines. sound detectors of the type indicated by the Figure 3 illustrates a practical applica- 40 letter A are to be connected to plugs 24 tion of the multiple type of sound amplify- 1 5 and 26, (the second sound receiver replacing equipment built into a portable case 46, in receiver B"). a in WhlCh suitable doors 47, are provided for e sound receivers D are to be indithe purpose of inspection and replacements. vldually connected to plugs 19 and 20, as In Figure 4 a single set of sound ampliindicated in dotted When sound defication equipment is illustrated. This reptectors A, are placed 'upon different parts resents the preferable arrangement for hal- V of the human body, .the sound waves cause lucinary sound detection. the diaphragms- 2 to vibrate; this vibration Having thus fully described my, invention, is transmitted to' the multiplying lever 4, I do not wish, to limit Emyself to the exact 50 whose longer arm v5, carries the magnetic construction as shown" it-being apparent disk, 6, which disk is forced to vibrate in that there may be considerable variatlons in the magnetlc field of an electro magnet 7, using the princj les of amplification, sound in which lnductive'currents are created (b vibratingmultip 'cation or sound transmitter I the vibrations) and transmitted to the pr1-. adjustment, without departing from the 55 mary coil 12, of the amplifying transformer spirit of myinventionv ,1 E. prima coil -12 of the trans- What I claim as new and desire to secure former is connecte to. a battery 22, whose by Letters Patent is:

individual cells are connected to a. selector .1. In combination a 'plurali of stethoswitch 23, for the purpose of increasing or scopic sound detectors, a pl 'ty of suit- 00 diminishing the strength of the inductive able electrical: sound amplifiers, suitable 1 currents transmitted to primary coil 12, electrical means to connect said sound amby addmg on or taking ofl' any desired numplifiers with .a plurality of stethosco ic ber of indiv dual The secondary coil sound detectors, and a plurality .of in e- 14, of amph-fying transformer E carries pendently arranged electrical selectormeans I II the increased inductive currents into, the to connect'said sound'amplifiers' pl u- V rality of individual sound receivers, subelectrical selector means for each electric st-antially as set forth. i sound. amplifier, and a plurality of suitable 2. In a stethoscopic sound detector, the electrical connecting, means to collectively combination of a pluralityof electric sound attach or detach a plurality of individual amplifiers, electrical regulating and controlsound receivers, substantially as set forth. ling means for said sound'amplifiers, suit- Signed at city of New York inthe county 15 able electrical connecting means for attack of New York and State of New York this ing or detaching a plurality of stethoscopic 2nd day of August A. D. 1924.

sound detectors, independently arranged ANTHONY OMALLEY. 

